The Minoan eruption of Santorini was a large-magnitude natural event. However, in terms of scale it ranks smaller in erupted volume and eruptive intensity than the historical eruption of Tambora in 1815 AD, and smaller in sulphur emission and, by inference, climatic effects than both the Tambora and Mt. Pinatubo, 1991, eruptions.
From Wikipedia, the free encyclopedia. For the band, see Linea Aspera (band) . The linea aspera (Latin: rough line) is a ridge of roughened surface on the posterior surface of the femur, to which are attached muscles and intermuscular septum.Its margins diverge above and below. number of muscles attach to the linea aspera: 1  From the medial lip of the linea aspera and its prolongations above and below, the vastus medialis originates. 2  From the lateral lip and its upward prolongation, the vastus lateralis takes origin.
Arrector pili muscles are the tiny muscles between individual hair follicles and an adjacent region of the outer-part of the dermis layer of the skin. The arrector pili muscle associated with each hair follicle extends from the side of the hair follicle to the outermost (i.e. towards the.) part of the dermis layer of the skin.The arrector pili muscles associated with hair follicles consist of smooth muscle (i.e. these muscles are under unconscious, rather than conscious control). : 1  When. 2  and the hair shaft emerges from the skin at a shallow angle. : When. 2  and the hair shaft emerges from the skin at a shallow angle. 3  When the body is under some form of stress, e.g. due to fear or low temperatures, the nerve endings (of the autonomic nervous system) stimulate the arrector pili muscles to.